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<meta name="description" content="###Java Abstract Factory Pattern(抽象工厂模式) 抽象工厂模式（Abstract Factory Pattern）是围绕一个超级工厂创建其他工厂。该超级工厂又称为其他工厂的工厂。这种类型的设计模式属于创建型模式，它提供了一种创建对象的最佳方式。在抽象工厂模式中，接口是负责创建一个相关对象的工厂，不需要显式指定它们的类。每个生成的工厂都能按照工厂模式提供对象。 优点：">
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          <h1 class="post-title" itemprop="name headline">Java-Abstract-Factory-Pattern(抽象工厂模式)</h1>
        

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        <p>###Java Abstract Factory Pattern(抽象工厂模式)</p>
<p><strong>抽象工厂模式（Abstract Factory Pattern）是围绕一个超级工厂创建其他工厂。该超级工厂又称为其他工厂的工厂。这种类型的设计模式属于创建型模式，它提供了一种创建对象的最佳方式。<br>在抽象工厂模式中，接口是负责创建一个相关对象的工厂，不需要显式指定它们的类。每个生成的工厂都能按照工厂模式提供对象。</strong></p>
<p><strong>优点：当一个产品族中的多个对象被设计成一起工作时，它能保证客户端始终只使用同一个产品族中的对象。<br>缺点：产品族扩展非常困难，要增加一个系列的某一产品，既要在抽象的 Creator 里加代码，又要在具体的里面加代码。</strong></p>
<a id="more"></a>
<p>实现步骤：</p>
<ol>
<li><p>创建一个形状接口</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">/**</span><br><span class="line"> * 1. 创建一个形状接口</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public interface Shape &#123;</span><br><span class="line">	/**</span><br><span class="line">	 * 画图方法</span><br><span class="line">	 */</span><br><span class="line">	void draw();</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>创建实现接口的实现类</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line">/**</span><br><span class="line"> * 2. 创建实现接口的实现类--矩形</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class Square implements Shape&#123;</span><br><span class="line"></span><br><span class="line">	public void draw() &#123;</span><br><span class="line">		System.out.println(&quot;矩形&quot;);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">/**</span><br><span class="line"> * 2. 创建实现接口的实现类--圆角矩形</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class Rectangle implements Shape&#123;</span><br><span class="line"></span><br><span class="line">	public void draw() &#123;</span><br><span class="line">		System.out.println(&quot;圆角矩形&quot;);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">/**</span><br><span class="line"> * 2. 创建实现接口的实现类--圆形</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class Circle implements Shape&#123;</span><br><span class="line"></span><br><span class="line">	public void draw() &#123;</span><br><span class="line">		System.out.println(&quot;圆形&quot;);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>创建一个颜色接口</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">/**</span><br><span class="line"> * 3. 创建颜色接口</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public interface Color &#123;</span><br><span class="line">	/**</span><br><span class="line">	 * 填充颜色</span><br><span class="line">	 */</span><br><span class="line">	void fill();</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>创建实现颜色接口的实体类</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line">/**</span><br><span class="line"> * 4. 创建实现颜色接口的实体类--蓝色</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class Blue implements Color&#123;</span><br><span class="line"></span><br><span class="line">	public void fill() &#123;</span><br><span class="line">		System.out.println(&quot;蓝色&quot;);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">/**</span><br><span class="line"> * 4. 创建实现颜色接口的实体类--绿色</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class Green implements Color&#123;</span><br><span class="line"></span><br><span class="line">	public void fill() &#123;</span><br><span class="line">		System.out.println(&quot;绿色&quot;);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">/**</span><br><span class="line"> * 4. 创建实现颜色接口的实体类--红色</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class Red implements Color&#123;</span><br><span class="line"></span><br><span class="line">	public void fill() &#123;</span><br><span class="line">		System.out.println(&quot;红色&quot;);</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>为颜色和形状创建抽象类</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><span class="line">/**</span><br><span class="line"> * 5. 为颜色和形状创建抽象类来获取工厂</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public abstract class AbstractFactory &#123;</span><br><span class="line">	/**形状工厂类(包名+类名)--com.mazaiting.factory.ShapeFactory*/</span><br><span class="line">	public static final String SHAPEFACTORY = ShapeFactory.class.getName();</span><br><span class="line">	/**颜色工厂类(包名+类名)--com.mazaiting.factory.ColorFactory*/</span><br><span class="line">	public static final String COLORFACTORY = ColorFactory.class.getName();</span><br><span class="line">	</span><br><span class="line">	/**圆角矩形类名称(包名+类名)--com.mazaiting.shape.Rectangle*/</span><br><span class="line">	public static final String RECTANGLE = Rectangle.class.getName();</span><br><span class="line">	/**矩形类名称(包名+类名)--com.mazaiting.shape.Square*/</span><br><span class="line">	public static final String SQUARE = Square.class.getName();</span><br><span class="line">	/**圆形类名称(包名+类名)--com.mazaiting.shape.Circle*/</span><br><span class="line">	public static final String CIRCLE = Circle.class.getName();</span><br><span class="line">	/**红色类名称(包名+类名)--com.mazaiting.color.Red*/</span><br><span class="line">	public static final String RED = Red.class.getName();</span><br><span class="line">	/**绿色类名称(包名+类名)--com.mazaiting.color.Green*/</span><br><span class="line">	public static final String GREEN = Green.class.getName();</span><br><span class="line">	/**蓝色类名称(包名+类名)--com.mazaiting.color.Blue*/</span><br><span class="line">	public static final String BLUE = Blue.class.getName();</span><br><span class="line">	</span><br><span class="line">	public abstract Color getColor(String color);</span><br><span class="line">	public abstract Shape getShape(String shape);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>创建扩展了 AbstractFactory 的工厂类，基于给定的信息生成实体类的对象。</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br></pre></td><td class="code"><pre><span class="line">/**</span><br><span class="line"> * 6. 创建扩展了 AbstractFactory 的工厂类，基于给定的信息生成实体类的对象。</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class ShapeFactory extends AbstractFactory&#123;</span><br><span class="line">	</span><br><span class="line">	/**</span><br><span class="line">	 * 单例。如有不懂，请移步 单例模式(http://www.jianshu.com/p/fb952d0140ec)</span><br><span class="line">	 */</span><br><span class="line">	private static ShapeFactory sShapeFactory; </span><br><span class="line">	private ShapeFactory()&#123;&#125;</span><br><span class="line">	public static ShapeFactory getInstace() &#123;</span><br><span class="line">		if (null == sShapeFactory) &#123;</span><br><span class="line">			synchronized (ShapeFactory.class) &#123;</span><br><span class="line">				if (null == sShapeFactory) &#123;</span><br><span class="line">					sShapeFactory = new ShapeFactory();</span><br><span class="line">				&#125;</span><br><span class="line">			&#125;</span><br><span class="line">		&#125;</span><br><span class="line">		return sShapeFactory;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	/**</span><br><span class="line">	 * 获取形状类型对象</span><br><span class="line">	 * 使用反射创建具体类的实例。如有不懂，请移步 反射机制详解(http://www.jianshu.com/p/990910bd600e)</span><br><span class="line">	 * @param type 类型</span><br><span class="line">	 * @return 返回形状类型对象</span><br><span class="line">	 */</span><br><span class="line">	@Override</span><br><span class="line">	public Shape getShape(String shape) &#123;</span><br><span class="line">		try &#123;</span><br><span class="line">			Class&lt;?&gt; clazz = Class.forName(shape);</span><br><span class="line">			return (Shape) clazz.newInstance();</span><br><span class="line">		&#125; catch (Exception e) &#123;</span><br><span class="line">			e.printStackTrace();</span><br><span class="line">		&#125;</span><br><span class="line">		return null;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	@Override</span><br><span class="line">	public Color getColor(String color) &#123;</span><br><span class="line">		return null;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">/**</span><br><span class="line"> * 6. 创建扩展了 AbstractFactory 的工厂类，基于给定的信息生成实体类的对象。</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class ColorFactory extends AbstractFactory&#123;</span><br><span class="line">	</span><br><span class="line">	/**</span><br><span class="line">	 * 单例。如有不懂，请移步 单例模式(http://www.jianshu.com/p/fb952d0140ec)</span><br><span class="line">	 */</span><br><span class="line">	private static ColorFactory sColorFactory; </span><br><span class="line">	private ColorFactory()&#123;&#125;</span><br><span class="line">	public static ColorFactory getInstace() &#123;</span><br><span class="line">		if (null == sColorFactory) &#123;</span><br><span class="line">			synchronized (ColorFactory.class) &#123;</span><br><span class="line">				if (null == sColorFactory) &#123;</span><br><span class="line">					sColorFactory = new ColorFactory();</span><br><span class="line">				&#125;</span><br><span class="line">			&#125;</span><br><span class="line">		&#125;</span><br><span class="line">		return sColorFactory;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	@Override</span><br><span class="line">	public Shape getShape(String shape) &#123;</span><br><span class="line">		return null;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	/**</span><br><span class="line">	 * 获取形状类型对象</span><br><span class="line">	 * 使用反射创建具体类的实例。如有不懂，请移步 反射机制详解(http://www.jianshu.com/p/990910bd600e)</span><br><span class="line">	 * @param type 类型</span><br><span class="line">	 * @return 返回形状类型对象</span><br><span class="line">	 */</span><br><span class="line">	@Override</span><br><span class="line">	public Color getColor(String color) &#123;</span><br><span class="line">		try &#123;</span><br><span class="line">			Class&lt;?&gt; clazz = Class.forName(color);</span><br><span class="line">			return (Color) clazz.newInstance();</span><br><span class="line">		&#125; catch (Exception e) &#123;</span><br><span class="line">			e.printStackTrace();</span><br><span class="line">		&#125;</span><br><span class="line">		return null;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>创建一个工厂创造器/生成器类，通过传递形状或颜色信息来获取工厂。</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line">/**</span><br><span class="line"> * 7. 创建一个工厂创造器/生成器类，通过传递形状或颜色信息来获取工厂。</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class FactoryProducer &#123;</span><br><span class="line">	</span><br><span class="line">	private static AbstractFactory abstractFactory = null;</span><br><span class="line"></span><br><span class="line">	public static AbstractFactory getFactory(String factory) &#123;</span><br><span class="line">		if (null == factory) &#123;</span><br><span class="line">			throw new RuntimeException(&quot;Param can&apos;t null&quot;);</span><br><span class="line">		&#125;</span><br><span class="line"></span><br><span class="line">		if (factory.equalsIgnoreCase(AbstractFactory.SHAPEFACTORY)) &#123;</span><br><span class="line">			// 获取形状工厂实例</span><br><span class="line">			abstractFactory = ShapeFactory.getInstace();</span><br><span class="line">		&#125; else if (factory.equalsIgnoreCase(AbstractFactory.COLORFACTORY)) &#123;</span><br><span class="line">			// 获取颜色工厂实例</span><br><span class="line">			abstractFactory = ColorFactory.getInstace();</span><br><span class="line">		&#125;</span><br><span class="line">		return abstractFactory;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
<li><p>主函数</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">public class Client &#123;</span><br><span class="line">	public static void main(String[] args) &#123;</span><br><span class="line">		// 获取具体的工厂</span><br><span class="line">		AbstractFactory factory = FactoryProducer.getFactory(AbstractFactory.COLORFACTORY);</span><br><span class="line">		// 获取具体的颜色类</span><br><span class="line">		Color color = factory.getColor(AbstractFactory.BLUE);</span><br><span class="line">		// 填充颜色</span><br><span class="line">		color.fill();</span><br><span class="line">	&#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
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